I was playing a regular game of standard, mono green badger mole cub build. Opponent had High Prefect Morcant in play and played an elf triggering her blight ability. I put a negative 1/1 counter on my badgermole cub. The next turn I played the enchantment Loading Zone and then I use the warp cost to play drix Fatemaker for 2 mana. I put a +1/+1 counter on my badger mole and because of the loading zone it gets two counters. One counter was offset by the negative counter from Morcant and the other went on as normal making him a 3/3. The very next turn they played an elf and blighted again. I chooose the badgermole cub and instead of going back to a 2/2 it changed the +1/+1 counter and he became a 1/1 creature with a -1/-1 counter on it. It should have just cancelled out the +1/+1 counter on the badgermole cub and turned it into a 2/2